- Drama: Doom at Your Service (English title) / One day, Doom Entered The Front Door Of My House (literal title)
- Revised romanization: Eoneu Nal Woori Jib Hyungwaneuro Myeolmangyi Deuleowadda
- Hangul: 어느 날 우리 집 현관으로 멸망이 들어왔다
- Director: Kwon Young-Il
- Writer: Im Meari
- Network: tvN
- Release Date: May 10, 2021 —
- Runtime: Monday & Tuesday 21:00
- Language: Korean
- Country: South Korea
Dong-Kyeong (Park Bo-Young) is an editor for a web novel company. Myeol-Mang (Seo In-Guk), suddenly appears in her ordinary life. She makes a 100 day contract with Myeol-Mang, risking her life and her love.
Myeol-Mang is the existence of a middle manager between God and humans. He makes a contract with Dong-Kyeong.